"Talking about this stuff is pretty new. The only solution I've come to when it comes to things like that - the health of my family or dating, really personal things - is not to talk about it," Stone explained.

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The 22-year-old also discussed her decision to drop out of high school before graduating, adding that she considers the choice to be the most formative of her career.

Stone said: "I did Superbad in what would've been my senior year. I was playing a senior, and had I graduated I would've missed that opportunity, and had I missed that opportunity I wouldn't be here right now."